1) open your phone and dial ##634# then press call. You’ll go into the Diagnosis Menu (going forward this icon appears in your programs so you don’t need to dal that again). This is just a phone dialer with a little icon and note on top.

2) In diagnosis mode (phone dialer) dial *#7284# and a dialogue will pop up letting you change the settings from Zune to modem or “Modem, USB dialog.”. You want to go with “Modem, Tethered Call”. It will restart you phone after a few seconds. [UPDATE: I forgot to mention that you need Zune installed on the PC or else the driver install won’t go correctly. If the drivers fail, add Zune, reconnect the phone and they’ll be fixed. Also, if the drivers don’t work try the drivers here (from Long Zheng of istartedsomething)] Once it restarts, connect to your PC over USB and drivers will be installed on your computer. Now go to your connections on your PC and you’ll see that a Samsung modem was added.

3) on your PC you need to change the setting for the Samsung modem. If you set it to prompt for user name you’ll be able to put in the login info. This is all it is for AT&T:
number: *99***1#
user name: WAP@CINGULARGPRS.COM
password: CINGULAR1
Go to connect and BAM. You’re tethered.

alright after a lot of hours trying here and there i finally set up my connection from tmobile hd7 usa.

on the advance tab (to get there after installing the drivers and device on usb modem mode go to to device manager then modems then right click usb modem then properties then advance tab) put there copy and paste +cgdcont=1,”IP”,”wap.voicestream.com”

Add A New Internet Connection
Close the Phone and Modem Options and the Control Panel.
For XP: Create a new connection with Start -> Connect To -> Show all connections -> Create a new connection.
1. Click Next

2. Select “Connect To The Internet” then Next

3. Select “Set up my connection manually” then Next

4. Select “Connect using a dial-up modem” then Next.

For Vista: Create a new connection with Start -> Connect To ->

1. Set up a connection or network

2. Choose a connection option: Click on “Connect to the Internet (Set up a wireless, broadband, or dial-up connection to the Internet.”

3. You are already connected to the Internet – Click on “Set up a new connection anyway”

4. At “How do you want to connect?” Click on “Dial-up”

5. Check only the Standard Modem (if prompted).

6. Give the connection a name such as “BlackBerry Modem”, then Next.

7. On the next screen, pick one of the following phone numbers, depending on your carrier:

….If you use GSM/Cingular/AT&T/TMobile/SwissCom: Enter phone number *99#

8. Click Next.

If you use T-Mobile:
………Username: (blank)
………Password: (blank)
………Note: In USA, you can leave both blank

9. click properties

ppp settings

ckeck only lcp extensions.

restart the phone at this point with usb disconnected then when the phone restarts connect usb

1. Have Winphone developer tools installed. Download it for yourself2. Connect Phone via USB3. Wait till zune starts and sync completes4. Verify that zune is not in a guest relationship5. open a command prompt, type netstat -a to confirm that port 443 is not being used6. open an admin command prompt, navigate to c:\windows\system32\drivers\etc\ then type notepad hosts and delete any references to windowsphone developer services7. go to the settings on the phone and turn airplane mode on so that the phone is forced to use internet via zune8. While the phone is still on the settings page, run Chevron with admin privileges